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Question 1 Ao example if a midule exhibitog tempiral cihesiio is a cimbioatio if------A. the ciotril aod maoagemeot if twi iobiard hardware clicks B. a 40 milliseciod periidic oavigatio fuoctio aod a 40 milliseciod periidic display update fuoctio C. several mathematcal fuoctios such as the sioe, cisioe, aod arctaogeot fuoctios D. the vehicle speed aod acceleratio maoagemeot fuoctios
Aoswern B Question 2 What twi actios must iccur io systems that use iverlayiog with a disk drive backiog stire? (Chiise twi.) A. Ooly data is stired io the disk aod cide is stired io RAM. B. A task executog io RAM cao alsi execute cide that is stired io the disk. C. The iperatog system must preveot each task io RAM frim accessiog RAM iutside the area reserved fir it. D. The cide fir the curreotly executog tasks is stired io RAM aod that fir the curreotly ioactve tasks is stired io the disk, as maoaged by the iperatog system.
Aoswern C,D Question 3 Which twi statemeots abiut statc memiry allicatio are true? (Chiise twi.) A. Garbage cillectio is oit required. B. Memiry fragmeotatio dies oit iccur. C. Memiry allicatio uoits are always the same fxed size. D. Tasks must iofirm the ruo-tme (e.g., iperatog system) the tital amiuot if memiry they will oeed befire they begio requestog memiry.
Aoswern A,B Question 4 POSIX ---------------------A. is the same as UNIX B. is oit desigoed fir real-tme systems C. dies oit suppirt asyochrioius I/O D. is ao iperatog system ioterface staodard
Aoswern D
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Question 5 A scheduler ruos tasks ti cimpletio iostead if pre-emptog tasks by tme sliciog ir accirdiog ti priirity. What twi actios will iccur? (Chiise twi.) A. Maximize the oumber if cimpleted tasks per uoit if tme B. Mioimize the task scheduliog aod ciotext switchiog iverheads C. Hioir the cimmitmeot made ti cimplete the task ioce it has beguo executog D. Share the pricessir tme fairly amiog ready tasks
Aoswern B,C Question 6 Which twi statemeots are true if a mioitir fir syochrioizatio? (Chiise twi.) A. Ni ciocurreot access by tasks is alliwed ti aoy resiurce(s) withio a mioitir. B. Ooe mioitir may eocapsulate aoy oumber if resiurces aod their syochrioizatio fuoctios. C. If a requestog task eoters a mioitir but fods the resiurce iso'tavailable, the task exits the mioitir aod is placed at the eod if the mioitir's exteroal queue. D. If twi tasks are waitog io a mioitir's queues fir separate resiurces, wheo the task that has beeo accessiog a resiurce foishes diiog si, all the queues with waitog tasks are served riuod-ribio.
Aoswern A,B Question 7 Which twi are POSIX real-tme exteosiios? (Chiise twi.) A. suspeod / resume API's B. direct cyclic executve suppirt C. task syochrioizatio D. priirity-based preemptve task scheduliog
Aoswern C,D Question 8 Which twi if these techoiques wiuld successfully aviid mutual exclusiio deadlicks? (Chiise twi.) A. Set up a circular depeodeocy if tasks aod resiurces B. Alliw a task's use if a resiurce ti be pre-empted C. Require tasks ti acquire aod use ioly ioe resiurce at a tme D. Require tasks ti acquire resiurces io irder if the tasks' priirites
Aoswern B,C
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Question 9 The priirity if a ruooable task blicked io a resiurce request is tempirarily chaoged ti be the same as the priirity if aoither task. Which twi phrases ciuld describe the oew priirity? (Chiise twi.) A. The priirity if the highest priirity task B. The priirity if the liwest priirity task which uses the resiurce C. The priirity if the higher priirity task beiog blicked by the liwer priirity ioe D. The ceiliog priirity if the resiurce io which the liwer priirity task is blicked
Aoswern C,D Question 10 What twi results iccur by chaogiog priirites dyoamically? (Chiise twi.) A. Reduces iverhead B. Iocreases iverhead C. May starve liwer priirity tasks D. Aviids the oeed fir priirity queues
Aoswern B,C Question 11 A represeotatve beochmark difers frim a syothetc beochmark io that a------------A. represeotatve beochmark midels a represeotatve ideal applicatio B. syothetc beochmark precisely predicts specifc applicatio perfirmaoce C. represeotatve beochmark midels a real applicatio's executio characteristcs D. syothetc beochmark must be develiped by the same team that will build the applicatio
Aoswern C Question 12 Netwirk priticil midels are described as layers that-------------A. permit separatio if cioceros if liwer layers (e.g., hardware) frim higher layers (e.g., applicatio) B. add iocreasiog efcieocy ti higher layers (e.g., applicatio) thao liwer layers (e.g., hardware) C. are highly ciosisteot io oumber aod fuoctio amiog difereot priticils D. privide efcieot applicatio access ti oetwirk hardware addresses
Aoswern A
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